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<p class="Decl"><b>procedure</b> SetBorderTransparent(ABitmap: <a href="../../GR32/Classes/TCustomBitmap32/_Body.htm">TCustomBitmap32</a>; 
  ARect: <a href="../../GR32/Types/Rectangle%20Types.htm#TRect">TRect</a>);</p>
<h2>Description</h2>
<p class="Body">This is an auxiliary function that sets the alpha channel along 
  the edges of specified rectangle to zero. It may be used on a bitmap before 
  passing it to <a href="Transform.htm">Transform</a> function as a workarownd to the edge antialiasing problem. For a dynamic option see <a href="../../GR32_Resamplers/Types/TPixelAccessMode.htm">TPixelAccessMode</a> pamTransparentEdge, which can do the same trick without any destructive editing. </p>
<p id="hidden">[See Also] </p>
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